Automatic stop for machine belt type



Feb. 13, 1934. H. G. KELLOGG 1,946,534

AUTOMATIC STOP FOR MACHINE BELT TYPE Filed July 14, 1930 3 Sheets-Sheetl INVENTOR ATTORNEY/8' Feb. 13, 1934. H. G. KELL-OGG 1,946,534

AUTOMATIC STOP FOR MACHINE BELT TYPE Filed July 14, 1930 3 Sheets-Sheet2 o w W m m N. W n w Lmll QM A \w MWWA 1.. a v 1 a W W N \W QMQ QNAQ W mw Nb flm i m R mm f \w 4 2. NW & m \wsm g m g MW H Feb. 13, 1934. H. G.KELLOGG 1,946,534

AUTOMATIC STOP FOR MACHINE BELT TYPE Filed July 14, 1930 3 Sheets-Sheet3 I win INVENTOR flame) 6. XlZflj/ wm mmw ATTORN YA? Patented Feb. 13,1934 UNITED STATES PATENT AUTOMATIC STOP FOR MACHINE BELT TYPEApplication July 14, 1930. Serial No. 467,917

10 Claims.

This invention relates generally to power actuated machines and hasparticular reference to the control means therefor.

While the invention is capable for use in connection with various typesof machines, it finds particular utility when used in connection with ametal working machine for fashioning molding or like strips to apredetermined contour and accordingly the invention is illustratedherein as applied to such a machine.

Consistent with the present state of the art the machine, illustratedherein, is designed to form the molding strips by advancing a flat stripof metal or other suitable material through a series of forming rolls toprogressively change the cross-sectional contour thereof, and to thisend the invention consists in the provision of improved means forautomatically interrupting or stopping the feeding of the strip after aselected length thereof has been fashioned permitting the latter to besevered from the remaining portions of the strip.

The several objects, advantages and novel details of construction of theinvention will be made more apparent as this description proceedsespecially when considered in connection with the accompanying drawingswherein:

Figure 1 is a fragmentary top plan view of a machine constructed inaccordance with this invention.

Figure 2 is a fragmentary side elevational view of a portion of themachine illustrated in Figure 1. Figure 3 is a fragmentary top plan viewof the automatic stop mechanism with certain parts broken away for thesake of clearness.

Figure 4 is an enlarged fragmentary plan view of the clutch actuatingmechanism.

Figure 5 is a side elevational View of the construction illustrated inFigure 4. I

Figure 6 is an end elevational view partly in section of theconstruction shown in Figure 4.

Figure 7 is a cross-sectional View taken on the line '77 of Figure 3.

Figures 8 and 9 are fragmentary detail views of a portion of themechanism shown in Figure 3.

Figure 10 is a horizontal sectional view taken substantially through thecenter of the clutch mechanism showing the clutch in an engagedposition.

Referring now particularly to the drawings wherein like referencecharacters indicate corresponding parts throughout the several views, itwill be noted that reference numeral 10 indicates the bed of the machineupon which are mounted a series of sets of driven rolls which advance aflat metallic strip or ribbon and during this advancement, fashions thesame to a predetermined cross-sectional contour. The machine illustratedherein comprises several sets of forming rolls 11 provided withhorizontal axes and driven in timed relation to each other by means of aseries of intermeshing gears 12 extending longitudinally of the machineat one side thereof.

For driving the train of gears 12 to rotate the various forming rolls11, I provide a driven shaft 13 extending transversely of the machineand having a gear 14 secured thereto adapted to mesh with thecomparatively large gears 15 and 16 arranged upon opposite sides of thegear 14. The gears 15 and 16 are secured to the shafts 17 for drivingthe train of gears 12 and as a consequence the forming rolls 11. Thegearing 14, 15 and 16 is commonly known in the art as reduction gearingand the arrangement is such as to drive the forming rolls 11 at areduced speed from the driven shaft 13. Surrounding the driven shaft 13and capable of rotation relative thereto is a driving member 18 having aportion 19 constituting one element of a clutch 20 and having an annularportion 21 forming a Wheel and adapted to be driven by a suitable sourceof power (not shown).

The cooperating element of the clutch 20 is in the form of a member 22secured to the shaft 13 and having a radial flange 23 adapted tofrictionally engage the rear surface of the clutch element 19 in such amanner as to be driven by the latter and thereby establish a drivingconnection between the member 18 and driven shaft 13. The mechanismillustrated herein for effecting a frictional engagement between theclutch parts comprises an annular ring 24 slidably mounted upon themember 22 and adapted to engage the front side of the frictional clutchpart 19. The arrangement is such that the frictional clutch part 19 isarranged between the flange 23 and the slidable ring 24 so that when thering 24 is moved in a direction toward the radial flange 23, the latterwill be frictionally coupled to the driving member 18 and owing to thefact that the member 22 carrying the radial flange 23 is keyed to theshaft 13, the latter will be driven to effect an operation of theforming rolls 11.

For sliding the ring 24 upon the member 22 in the manner specifiedabove, the following mechanism is preferably provided: Slidably mountedupon the shaft 13 beyond the member 22 is a sleeve 25 pivotallyconnected by means of the links 26 to the dogs 27 which are in turnpivotally connected to the radial flange 23 by means of links 28. Thedogs 27 are provided with inwardly extending portions 29 adapted tofulcrum upon a ment of the block 45.

plate which in turn is slidably mounted upon the clutch member 22adjacent the end thereof. The plate 30, as shown particularly in Figure3 of the drawings, is connected to the ring 24 by means of a series ofpins 31 having the forward ends anchored in the ring'24 and the rear endportions thereof slidably engaging suitable apertures in the flange 23and plate 30. The pins 31 are held in assembled relation with the plate30 by means of suitable stops 32 threadedly engaging the rear ends ofthe pins and adapted to abut the rear face of the plate 30. Surroundingthe pins 31 intermediate the flange 23 and ring 24 are coil springs 33having one end abutting the flange and the opposite end engaging thering 24 tending to move the latter forwardly out of frictionalengagement with the clutch part 19. The above arrangement is such thatwhen the sleeve 25 is moved rearwardly or in the direction of the arrowin Figure 3, the portions 29 on the dogs 27 move forwardly permittingthe springs 33 to move the ring 24 away from the clutch member 19 toeifect a disengagement of the clutch 20.

In order to actuate the sleeve 25 to disconnect the drive between themembers 13 and 13, I provide a reciprocable shaft 34 extending axiallythrough the shaft 13 and having the inner end thereof secured to thesliding sleeve 25, as illustrated by the reference numeral 35. The outerend portion of the shaft is connected for autobed of the machine bymeans of the bolts 41.

Surrounding the shaft 34 between the projections 38 and the member 40 isa spring 42 having the rear end abutting a sleeve 43 which in turn issecured to the shaft 34 in a position to engage the projection 38. Theouter end of the spring is likewise supported by a sleeve 44 threadedupon the shaft 34 so as to be capable of adjustment to vary the tensionof the spring 42. The arrangement is such that the spring 42 normallytends to move the slide 3'7 together with the shaft 34 inwardly foractuating the clutch mechanism 20 in a manner hereinbefore set forth.

Movement of the shaft 34 and slide 3'? in a direction to throw out theclutch 20 by the spring 42 may be controlled by means of the followingconstruction: Slidably mounted upon the bed of the machine and having atongue and grooved engagement with the member 3'7 is an elongated block45 having a pair of levers 46 and 4'7 pivoted thereto as illustrated inFigure 3 of the drawings. The free end of the lever 47 is substantiallyV-shaped and is adapted to engage in a corre spondingly shaped groove 48formed in a guide member 49 which in turn is rigidly but adjustablysecured to the bed of the machine by means of the bolts 50. Theconstruction is such that when the parts are in the positionsillustrated in Fig ures 3 and l, the end of the lever 47 is inengagement with the groove 48 thereby preventing move- The lever 46 onthe other hand is provided with a shoulder 51 intermediate the endsthereof adapted to engage a cooperating shoulder 52 projecting from themember 37 and thereby lock the latter member from movement by the spring42 when the parts are in the position illustrated in Figure 3 and tolock the same to the member 45 for movement therewith as a unit when theparts are in the position shown in Figure 4. As shown in Figure '7, inorder to ctuate the lever 47 to disengage the same from the groove 48, Iprovide a member 53 slidably mounted upon the bed and having a tongueand grooved engagement with the opposite side of the block 45. Referringnow more in detail to Figure 3, it will be observed that the member 53has a slot and pin connection with the block 45 permitting a slightrelative movement therebetween. The slot and pin connection, aforesaid,comprises a pin 54 projecting laterally from the member 53 andengageable in an elongated slot 55 formed in the member 45 and isadapted to assume a position within the slot spaced from the front wall56 of the latter when the parts are in the position illustrated inFigure 3. Extending upwardly from the member 53 is a projection 5'7arranged adjacent to the free end of the lever 47 in such a manner as toengage the latter and move the same out of the groove 48.

With the construction as thus far described and assuming that the partsof the throw-out mechanism are in the position illustrated in Figure 3and that the lever 46 is moved to the dotted line position illustratedin this figure wherein the cooperating shoulders 51 and 52 on the lever46 and member 37, respectively, are out of engagement the latter membertogether with the shaft 34 will be moved rearwardly by the spring 42relative to the member 45 to the position shown in Figure 4. Movement ofthe member 37 to the position illustrated in Figure 4, as specifiedabove, effects a corresponding movement of the rod 34 which disconnectsthe clutch in the manner hereinbefore set forth.

In order to actuate the clutch throw-out mechanism automatically and atpredetermined intervals, the following construction is provided: Asshown particularly in Figure 1, one of the forming roll actuatingshafts, preferably the end shaft, is extended laterally beyond the bedof the machine and has secured thereto a suitable pulley 62. The pulley62 is adapted to drive a second pulley 63 journaled on a bushing 64which in turn has the opposite ends slidably engaging the frame members65. The driving connection between the pulleys is efiected by acontinuous belt 66 extending around the pulleys and having a projection67 thereon adapted to engage a dog 68 secured to a rockshaft 69. Therockshaft 69 is journaled upon the machine as illustrated at '70 and hassecured thereto a lever '71 which in turn is connected to the free endof the lever 46 by means of a flexible cable '72. The construction issuch that upon each complete revolution of the belt 66, the projection6'7 will engage the dog 68, rock the shaft 69 which in turn rocks thelever '71 to exert a pull upon the flexible cable '72 attached to thefree end of the lever 46. A pull on the flexible cable '72 in thedirection of the arrow illustrated in Figure 1 moves the lever 46 toeffect a disengagement of the shoulders 51 and 52 and thereby actuatethe throw-out mechanism in the manner just described.

Thus from the foregoing it will be observed that the belt 66 controllingthe operation of the clutch throw-out mechanism is driven in timedmanner hereinbefore set forth to actuate the throw-out mechanism to stopthe machine and permit the end portion of the strip to be severed fromthe remaining portions thereof. The length of the strip advanced priorto stopping the machine may be varied in different ways but as hereinshown depends upon the length of the belt 68. In other words, by slidingthe pulley 63 upon the frame 65 and by interchanging the beltsaccordingly the intervals at which the machine is automatically stoppedmay be varied with the result that different lengths of strips may besecured.

As shown in Figure l, I provide manually operable mechanism forre-engaging the clutch after the throw-out mechanism has been actuated.This means comprises a rail '74 pivotally connected to the bed of themachine by means of suitable links '75. One of the links '75 is in theform of a bell crank lever having a slot '76 in one end thereof adaptedto receive a pin '77 projecting downwardly through the bed of themachine and secured to the sliding member 53. The arrangement is such.that when the rail '74 is moved in the direction of the arrowillustrated by the referencecharacter '78 in Figure l, the bell cranklever engages the pin 7'7 and moves the member 53 rearwardly until thepin 54 engages the rear wall 56 of the slot 55. During this lattermovement of the member 53 the pin 57 engages the lever 47 and rocks thesame against the action of the spring 60 out of engagement with therecess 58 in the stationary guide 49 permitting the members 45 and 53 tomove to the positions illustrated in Figure 4 upon continued operationof the manually operable mechanism. As shown in Figure 4 the step 60 onthe member 37 arrests movement of the members 45 and 53 in a positionwherein the cooperating shoulders 51 and 2 are opposite each otherpermitting the spring 62 to move the lever 46 in a direction to engagethese shoulders and thereby lock the members 37 and 45 together. Fromthe above construction it will be observed that movement of the rail inthe opposite direction designated by the arrow 78' in Figure 1 effects aforward movement of the members 37, 45 and 53 to their originalpositions illustrated in Figure 3.

While in describing the stop mechanism 36 particular stress has beenplaced upon the fact that this stop mechanism functions automatically tothrow-out the clutch and interrupt the operation or" the machine, thepresent invention contemplates the provision of means for releasing thetension of the spring 42 and thereby permit actuation of the stopmechanism by manipulation of the rail '74 with comparatively littleeffort. In order to release the tension of the spring, as specifiedabove, I provide the following mechanism. Secured to the rod 34 inadvance of the sleeve 44 is a suitable abutment '79 slidably engaging aplate 80 rotatably mounted upon the member 40 and carrying an upwardlyprojecting stop 81 in advance of the abutment '79. The stop 81, as shownparticularly in Figure 8, is arranged upon the plate 80 eccentricallyrelative to the axis thereof and is adapted to engage the abutment '79upon rotation of the plate to either compress the spring 42 or torelieve the tension thereof depending upon the direction of rotation ofthe plate. For rotating the plate a suitable handle 82 is arranged belowthe member 40 in a position where it may be conveniently grasped by theoperator to move the stop 81 to its various positions of adjustmentrelative to the abutment '79 as shown in Figures 3 and 8. Thus from theforegoing, it will be observed that the stop mechanism may be readilyadjusted so that the latter may be either manually or automatically.actuated to throw out the clutch and stop the machine.

While in describing and particularizing upon the features of the presentinvention, particular stress has been placed upon the association of thethrow-out mechanism in connection with a metal working machine of thetype illustrated herein and also in connection with a specific construction of clutch, it should be understood that different mechanismmay be utilized with equal facility in connection with various types ofmachines and also in connection with various types of clutches andaccordingly reservation is made to make such changes as may come withinthe purview of the accompanying claims.

What I claim as my invention is:

1. A machine having in combination, driving and driven members, a clutchoperatively connecting said members, actuating mechanism for the clutchincluding an element connected to the movable part of the clutch, meansfor automatically actuating said clutch including yieldable meansnormally urging said element in a direction to disengage the clutch,manually operable means for said clutch, and means for rendering saidyielolable means inoperative permitting actuation of said clutch by saidmanually operable means.

2. A machine having in combination, driving and driven members, a clutchoperatively connect-ing said members, actuating mechanism for the clutchincluding an element connected to the movable part of the clutch, meansfor automatically actuating said clutch including yieldable meansnormally urging said element in a direction to disengage the clutch,means normaliy preventing movement of the element by the yieldablemeans, means automatically operable to release said last named means atpredetermined intervals permitting the element to move in the aforesaiddirection for disengaging the clutch connection between the driving anddriven members,

means for rendering said yieldable means inoperative permitting manualoperation of said clutch.

3. A machine having in combination, driving and driven members, a clutchoperatively connecting the driving and driven members, actuatingmechanism for the clutch including, a reciprocable member connected tothe movable ele ment of the clutch, yieldable means normally urging saidreciprocable member in a direction to disengage the clutch from thedriven member, a lever pivotally mounted adjacent to the reciprocablemember having a shoulder intermediate the ends thereof engaging acooperating shoulder on the reciprocable member for normally preventingmovement of the latter by said yieldable means, and means connected tothe free end of said lever operable at predetermined intervals to rockthe lever about its pivotal connection and disengage said shoulderspermitting the reciprocable member to move under the action of theyieldable means and disengage the clutch connection between the drivingand driven memb rs.

4. A machine having in combination, driving and driven members, a clutchfor operatively connecting said members, actuating mechanism for theclutch including, a reciprocable member normally urging a disengagementof said clutch, means normally preventing movement of said reciprocablemember, means automatically opera able to release said last named meansto permit said reciprocable member to disengage said clutch, manuallyoperable means for moving said reciprocable member to its initialposition, and means for rendering said reciprocable member inoperativeupon actuation of said automatically operable release means whereby saidmanually operable means may be actuated to effect a disengagement ofsaid clutch.

5. A machine having in combination, driving and driven members, a clutchfor operatively connecting said members, actuating mechanism for theclutch including, a member connected to the movable part of the clutch,yieldable means normally urging said member to disengage said clutch,means normally preventing movement of said member, means automaticallyoperable to release said last named means to permit said member todisengage said clutch, manually operable means for moving said member toits initial position, and means for rendering said reciprocable memberinoperative upon actuaton of said automatically operable release meanswhereby said manually operable means may be actuated to eiifect adisengagement of said clutch.

6. A machine having in combination, driving and driven members, a clutchoperatively connecting said members, actuating mechanism for the clutchincluding, a reciprocable member connected to the movable element of theclutch, yieldable means normally urging the reciprocable member torelease the clutch, a reciprocable element adjacent the reciprocablemember, a lever associated with said reciprocable element normallypreventing movement of the reciprocable member relative thereto, meansoperable to actuate the lever to permit movement of the reciprocablemember under the action of the yieldable means to release the clutch,means for latching the reciprocable element from movement with thereciprocable member, and manually operable means for releasing saidlatch and moving said reciprocable element to a position wherein thelever aforesaid engages the reciprocable member to permit the latter andthe reciprocable member to be moved to their initial positions as aunit.

'7. A machine having in combination, driving and driven members, aclutch operatively connecting said members, actuating mechanism for theclutch including, a reciprocable clutch actuating member, yieldablemeans normally urging the reciprocable member to release the clutch, areciprocable element having a lever normally pre venting movement of thereciprocable member, means for actuating the lever to permit movement ofthe reciprocable member by the yieldable means aforesaid to disengagesaid clutch, a latch for preventing movement of the reciprocable elementwhen the reciprocable member is moved under the action of the yieldablemeans, a second reciprocable member, means permitting a slight relativemovement between the reciprocable element and said second reciprocablemember to release said latch, and manually operable means for moving thesecond reciprocable member and the reciprocable element to a positionwhereby the lever carried by the latter will engage the first mentionedreciprocable member to move the first and second mentioned reciprocablemembers and the reciprocable element as a unit to their initialposition.

8. A machine having in combination, driving and driven members, a clutchoperatively connecting said members, actuating mechanism for the clutchincluding an element connected to the movable part of the clutch, meansfor automatically actuating said clutch including yieldable meansnormally urging said element in a direction to disengage the clutch,manually operable means for said clutch, and means for varying thetension of said yieldable means and operable to render the sameinoperative permitting actuation of said clutch by said manuallyoperable means.

'9, A machine having in combination, driving and driven members, aclutch operatively connecting said members, actuating mechanism for theclutch including an element connected to the movable part of the clutch,means for automatically actuating said clutch including a yieldablemember having one end engaging said element and having the opposite endengaging an adjustable abutment and normally urging said element in adirection to disengage the clutch, manually operable means for theclutch, and means for moving said adjustable abutment to a position torelease the tension of said yieldable member permitting manual operationof said clutch.

10. A machine having in combination, driving and driven members, aclutch operatively connecting said members, actuating mechanism for theclutch including an element connected to the movable part of the clutch,means for automatically actuating said clutch including a spring havingone end engaging said element and having the opposite end engaging anadjustable abutment andnormally urging said element in a direction toautomatically disengage the clutch, and means for moving said adjustableabutment to vary the tension of the spring comprising a rotatable memberhaving a cam engagement with said abutment to render the springoperative or inoperative.

HOMER G. KELLOGG.

